The P40 has 50% more memory, while the RTX 4080 is newer and has 2.1x the bandwidth.
At a glance
Memory
50% more on P40
- P40
- 24 GB
- RTX 4080
- 16 GB
Memory bandwidth
2.1x higher on RTX 4080
- P40
- 346 GB/s
- RTX 4080
- 717 GB/s
Cheapest on-demand
- P40
- --
- RTX 4080
- $0.23 /GPU/hr
Price comparison
Median price per GPU per hour by billing type, with the cheapest listing under it.
| Billing | P40 | RTX 4080 | Difference |
|---|---|---|---|
| On-demand | No on-demand listings | $0.24 /GPU/hr from $0.23 | |
| Spot | No spot listings | -- /GPU/hr from $0.11 |
Heads up: A provider's own page may quote a different figure, for example on tax, region or a promotion. A monthly-only plan shows a derived hourly rate. Medians are across providers, one vote each, so a large catalog does not outweigh a small one. No median for spot on the RTX 4080: we only show one when at least 3 providers list the GPU on that billing type. Verify before provisioning. More on how we price.
Price history
P40 vs RTX 4080 price history
Weekly median on-demand price per GPU per hour
Specs comparison
| Spec | P40 | RTX 4080 | Difference |
|---|---|---|---|
| Memory | |||
| Capacity | 24 GB GDDR5 | 16 GB GDDR6X | 50% more on P40 |
| Bandwidth | 346 GB/s | 717 GB/s | 2.1x higher on RTX 4080 |
| Bus width | 384-bit | 256-bit | 50% wider on P40 |
| Compute · dense | |||
| FP8 | Not supported | 194.9 TFLOPS | RTX 4080 only |
| FP16 / BF16 | 97.5 TFLOPS | ||
| INT8 | 47 TOPS | 389.9 TOPS | 8.3x higher on RTX 4080 |
| FP32 | 12 TFLOPS | 48.7 TFLOPS | 4.1x higher on RTX 4080 |
| Platform | |||
| Interconnect | PCIe only | PCIe only | |
| Board power | 250 W | 320 W | 28% higher on RTX 4080 |
| Released | Q3 2016 | Q4 2022 | 6 years newer on RTX 4080 |
| Precision | |||
| Supported formats | FP16FP32INT8 | FP8FP16BF16TF32FP32INT4INT8 | |
Compute: Vendor peak figures, dense and per GPU. Not measured throughput.
Source: P40 datasheet and RTX 4080 datasheet.
Where to rent them
Providers that rent these GPUs, with each one's cheapest rate. No provider we track offers both right now.
| Provider | P40 | RTX 4080 |
|---|---|---|
Salad
Distributed
|
-- | $0.23 /GPU/hr On-demand |
GPUhub
Singapore
|
-- | $0.25 /GPU/hr On-demand |
Theta EdgeCloud
Distributed
|
-- | $0.29 /GPU/hr On-demand |
SwissGPU
Switzerland
|
-- | $0.24 /GPU/hr On-demand |
Runpod
USA
|
-- | $0.27 /GPU/hr On-demand |
Similar GPUs
Other comparisons in the same class.
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Nvidia RTX 4090
24 GB GDDR6X · 41% more bandwidth than the RTX 4080
On-demand from $0.26 /GPU/hr -
Nvidia RTX 5080
16 GB GDDR7 · 34% more bandwidth than the RTX 4080
On-demand from $0.25 /GPU/hr
Our data for Nvidia P40 was last updated on Sept. 14, 2026, and for Nvidia RTX 4080 on Sept. 14, 2026.